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Review Flashcards

(50 cards)

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1
Q

Function of rubrospinal tract

A

increase muscle tone to all limb muscles, esp the flexors in extremities

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2
Q

Origination of rubrospinal tract

A

red nucleus magnocellular area (RNmc)

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3
Q

Decussation of rubrospinal tract

A

ventral tegmental decussation (VTD)

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4
Q

Course of rubrospinal tract

A

down thru lateral funiculi

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5
Q

Synapse of rubrospinal tract

A

somatic alpha motor neurons in ventral horn

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6
Q

2nd decussation of rubrospinal tract

A

ipsilateral

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7
Q

Termination of rubrospinal tract

A

gross movement of flexors in extremities

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8
Q

Function of lateral corticospinal tract

A

increase muscle tone to all limb muscles esp for fine, skilled & voluntary movement

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9
Q

Origination of lateral corticospinal tract

A

Pyramidal neurons in layer V of motor cortices (areas 1-7), thru internal capsule

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10
Q

Decussation of lateral corticospinal tract

A

Pyramidal decussation in ventral medulla

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11
Q

Course of lateral corticospinal tract

A

down thru lateral funiculi

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12
Q

Synapse of lateral corticospinal tract

A

somatic alpha motor neurons in ventral horn of spinal cord

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13
Q

2nd decussation of lateral corticospinal tract

A

ipsilateral

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14
Q

Termination of lateral corticospinal tract

A

muscles of fine, skilled & voluntary movement

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15
Q

Neurons that give rise to both rubrospinal & lateral corticospinal tracts are _____________ organized.

A

somatotopically

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16
Q

Function of ventral corticospinal tract

A

increase muscle tone to all axial muscles esp those of fine, skilled & voluntary movement

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17
Q

Origination of ventral corticospinal tract

A

Pyramidal neurons in layer V of motor cortices (areas 1-7) thru internal capsule

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18
Q

Decussation of ventral corticospinal tract

A

no decussation; travel thru ventral brain stem

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19
Q

Course of ventral corticospinal tract

A

down thru ventral funiculi

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20
Q

Synapse of ventral corticospinal tract

A

somatic alpha motor neurons in ventral horn of spinal cord

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21
Q

2nd decussation of ventral corticospinal tract

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A

yes; commissure

22
Q

Termination of ventral corticospinal tract

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A

muscles of fine, skilled & voluntary movement

23
Q

Function of tectospinal tract

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A

increase muscle tone to all axial muscles coordinated with eye movement

24
Q

Origination of tectospinal tract

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A

deep layer of SC (stratum profundum)

25
Decussation of tectospinal tract
dorsal tegmental decussation
26
Course of tectospinal tract
down thru ventral funiculi
27
Synapse of tectospinal tract
somatic alpha motor neurons in ventral horn
28
2nd decussation of tectospinal tract
cervical to upper thoracic
29
Termination of tectospinal tract
neck & torso muscles with eye movement
30
Function of vestibulospinal tract
controls axial muscles in response to equilibrium esp extensors in trunk involved in posture
31
Origination of vestibulospinal tract
lateral vestibular nuclei only (not any of the other 3 nuclei)
32
Decussation of vestibulospinal tract
no decussation; ipsilateral
33
Course of vestibulospinal tract
down thru ventral funiculi
34
Synapse of vestibulospinal tract
somatic alpha motor neurons in ventral horn of spinal cord
35
Termination of vestibulospinal tract
extensor muscles; arms & legs for balance & equilibrium
36
Function of reticulospinal tract
axial & limb muscles in automatic movements
37
Origination of reticulospinal tract
reticular formation (pontine & medullary)
38
Decussation of reticulospinal tract
ipsilateral
39
Course of reticulospinal tract
down thru ventral funiculi
40
Synapse of reticulospinal tract
somatic alpha motor neuron
41
Termination of reticulospinal tract
axial & limb muscles
42
Function of corticospinal tract
sensory control & voluntary movement
43
Origination of corticospinal tract
pyramidal neurons in layer V of motor cortices (areas 1-7)
44
Decussation of corticospinal tract
cross
45
Course of corticospinal tract
down thru internal capsule
46
Synapse of corticospinal tract
cranial nerve sensory & motor nuclei
47
Termination of corticospinal tract
anatomical structures of head & neck
48
3 afferents of Inferior Olive
ML, Spino-olivary & Trigemino-olivary tracts
49
1 efferent of Inferior Olive
Olivocerebellar tract
50
The inferior olive is a ____________________.
somatic sensory relay to the cerebellum

Neuro II (1 decks)

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